.head_img{
    position: relative;
    width: 120px;
    height: 120px;
}
.head_btn{
    position: absolute;
    left: 20%;
    top: 45%;
    width: 60%;
    height: 20%;
    font-size: smaller;
    opacity:0.9;
    background: dodgerblue;
    border: none;
    outline: none;
    display: none;
}
.file {
    position: relative;
    display: inline-block;
    background: #D0EEFF;
    border: 1px solid #99D3F5;
    border-radius: 4px;
    padding: 4px 12px;
    overflow: hidden;
    color: #1E88C7;
    text-decoration: none;
    text-indent: 0;
    line-height: 20px;
}
.file input {
    position: absolute;
    font-size: 100px;
    right: 0;
    top: 0;
    opacity: 0;
}
.file:hover {
    background: #AADFFD;
    border-color: #78C3F3;
    color: #004974;
    text-decoration: none;
}
.invalid-feedback {
    display:none;
    width:100%;
    margin-top:.25rem;
    font-size:85%;
    color:#dc3545
}
.invalid-no{
    display:block;
    width:100%;
    margin-top:.25rem;
    font-size:85%;
    color:#dc3545
}


